omap3evm: Configure GPIO175 for touchscreen PEN_IRQ

GPIO175 is used for PEN_IRQ on the EVM. This patch
sets the mux settings for the same.

Signed-off-by: Sanjeev Premi <premi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/board-omap3evm.c

@@ -653,7 +653,9 @@ static struct omap_board_mux board_mux[] __initdata = {
 	OMAP3_MUX(SYS_NIRQ, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLUP |
 				OMAP_PIN_OFF_INPUT_PULLUP |
 				OMAP_PIN_OFF_WAKEUPENABLE),
-
+	OMAP3_MUX(MCSPI1_CS1, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP |
+				OMAP_PIN_OFF_INPUT_PULLUP |
+				OMAP_PIN_OFF_WAKEUPENABLE),
 	{ .reg_offset = OMAP_MUX_TERMINATOR },
 };
 #else